@misc{indiciae5f504661f6cc,
  title = {Mass spectrometry in structural and stereochemical problems. CXCIII},
  author = {Djerassi, C. and Duffield, A. M. and Liedtke, R. J.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710031876},
  note = {Source identifier: 19710031876}
}